Add support for PRAGMA analyze_limit and approximate analysis.

FossilOrigin-Name: 812547525d35df975f40cbbeb604cc9cd2dec809c1ca083cbb139fe59ffa1d73

diff --cc manifest
index 24310633cf3d2b8b3351ce8210cb39ed770ce185,ee0f01f5ced2a005a910ea83d163dc30c23477d3..5e7d1c29a4cb7baa07addc29439e54acde76b70d
--- 1/manifest
--- 2/manifest
+++ b/manifest
@@@ -1,5 -1,5 +1,5 @@@
- C Merge\sthe\sbytecode\sand\stables_used\stable-valued\sfunctions.\s\sRequires\n-DSQLITE_ENABLE_BYTECODE_VTAB\sat\scompile-time.
- D 2020-05-02T00:31:00.975
 -C Add\sa\smissing\sVdbeCoverage()\smacro.
 -D 2020-05-02T03:29:21.137
++C Add\ssupport\sfor\sPRAGMA\sanalyze_limit\sand\sapproximate\sanalysis.
++D 2020-05-02T03:46:32.798
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  F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
  F LICENSE.md df5091916dbb40e6e9686186587125e1b2ff51f022cc334e886c19a0e9982724
@@@ -480,7 -480,7 +480,7 @@@ F src/btreeInt.h 887cdd2ea7f4a65143074a
  F src/build.c ec6c0bda1e43ef55e5f5121a77ba19fac51fc6585f95ce2da795bcedcf6e8f36
  F src/callback.c d0b853dd413255d2e337b34545e54d888ea02f20da5ad0e63585b389624c4a6c
  F src/complete.c a3634ab1e687055cd002e11b8f43eb75c17da23e
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 -F src/ctime.c 060c9bc1c8a848a942326c6e73fff449e54e8e98487f555e49e7b897639db270
++F src/ctime.c e98518d2d3d4029a13c805e07313fb60c877be56db76e90dd5f3af73085d0ce6
  F src/date.c b29b349d277e3d579dcc295b24c0a2caed83fd8f090a9f7cbe6070c0fd662384
  F src/dbpage.c 8a01e865bf8bc6d7b1844b4314443a6436c07c3efe1d488ed89e81719047833a
  F src/dbstat.c 793deaf88a0904f88285d93d6713c636d55ede0ffd9f08d10f4ea825531d367f
@@@ -533,8 -533,8 +533,8 @@@ F src/printf.c 9be6945837c839ba57837b4b
  F src/random.c 80f5d666f23feb3e6665a6ce04c7197212a88384
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- F src/select.c c310de94bf67315054587c18a16e7a3e3dc3a98dc79168f0c2b776548d43f6cd
+ F src/select.c 1720bff2168491ca79af81a03bd18c0383f61d845c6e17caff9d25aabc4ab435
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  F src/sqlite3ext.h 2d1af80082edffd71c6f96f70ad1ce6a4fb46615ad10291fc77fe0dea9ff0197
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 -F src/vdbeaux.c 8349559e72bf0cfa2258b1159b004ec4d1717a054d2e1829c8cc897c32da8752
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  F src/vdbemem.c 39b942ecca179f4f30a32b54579a85d74ccaefa5af2a0ad2700abe5ef0768b22
  F src/vdbesort.c 2be76d26998ce2b3324cdcc9f6443728e54b6c7677c553ad909c7d7cfab587df
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diff --cc manifest.uuid
index b101f4640b475117337bb5e62126fd05dbaccb1e,ba532de872a6f3913d69fac58ee1d68e6573c230..50f4b2e862106392cda35dff363e540204f46222
--- 1/manifest.uuid
--- 2/manifest.uuid
+++ b/manifest.uuid
@@@ -1,1 -1,1 +1,1 @@@
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++812547525d35df975f40cbbeb604cc9cd2dec809c1ca083cbb139fe59ffa1d73

diff --cc src/ctime.c
Simple merge